Definition of "Yellow" :

noun: yellow color or pigment; the chromatic color resembling the hue of sunflowers or ripe lemons

verb: turn yellow

"The pages of the book began to yellow."

adjective: easily frightened

adjective: of the color intermediate between green and orange in the color spectrum; of something resembling the color of an egg yolk

adjective: affected by jaundice which causes yellowing of skin etc

adjective: cowardly or treacherous

"The little yellow stain of treason."

adjective: changed to a yellowish color by age

"Yellowed parchment."

adjective: typical of tabloids

"Yellow press."